Preparing of Copper Oxides Thin Films by Chemical Bath Deposition (CBD) for Using in Environmental Application

Thin films of copper oxide were prepared by chemical bath deposition (CBD) method on substrates of glasses by Alternate immersions method (AI) at room temperature for 20 second using heated liquid of sodium hydroxide up to 70 degrees and copper thiosulfate complex. The substrates were annealed at different temperatures (200-300-400) in the air; the crystalline structure of prepared samples was studied by using XRD and (SEM) technologies. The results were indicated to; the crystalline structure of prepared films was related to temperature of annealing of copper-oxide (Tenorite), cubic of Cu(2)o (Cuprite). Optical studies showed that the prohibited rang between (1.3-2.4) ev was related to annealing temperature (monoclinic). Therefore, application of solar cells is very promising as a suitable material for conversion of photovoltaic energy with high absorbency solar and low thermal issue. Real and imaginary dielectric constants were calculated (epsilon 1 and epsilon 2). Significant improvement in structure as a follower of annealing temperature required by oxide layer, SEM image showed that porous structure were distinctive materials for the manufacture of gas sensors. (C) 2015 The Authors. Published by Elsevier Ltd.